fLat bottomed (girls) make the race car go round!!!

Venom13132 · 01-21-2016, 07:31 AM

cool project. I always like to follow these custom parts threads! Keep posting up pics!

03threefiftyz · 01-21-2016, 09:04 AM

350/370's react quite well from an aero perspective to lots of rake....

synolimit · 01-21-2016, 10:01 AM

Well heres 15.2* and 8 fins then! Centers 10", next 2 are like 5.375", and outer 4 a like 7 something. Just something i picked. All are 100% parallel with each other so we'll go full scale with alumilite and test with string i guess.

Haboob · 01-21-2016, 10:35 AM

You should just leave it all cardboard.

Haboob · 01-21-2016, 11:17 AM

I like the Carbotech stickers on the bumper too. Just in case I didn't see one, there's another one to remind me.

Rusty · 01-21-2016, 01:33 PM

When you taking this thing to the track? You've been building it for 2yrs now, and haven't tested it on the track. I would have done one thing at a time to see if it made any improvements.

synolimit · 01-21-2016, 02:00 PM

Because its not done.

And im building this to be safe like all my past cars ive had on the local tracks.

And these projects cost nothing vs having to buy seats, belts, almost 2k wing, cage etc. rome wasnt built in a day and ive got expensive other hobbies.

Rusty ill make it to Pitt this summer. That 1:30's i saw must be killing you. You can tag along down into the teens with my draft. Ill slow it down some.

Rusty · 01-21-2016, 02:33 PM

Just wait until you get of of those spec Miata's running you down.

You couldn't run with Bruce Sheldon and his Ford Pinto @ 01:10:584.

I can't wait to run the new section of track they built last year.

synolimit · 01-21-2016, 02:57 PM

Same here. Last time i was there was on my bike at a 1:03's. Im assuming unlike mid ohio where im faster in a car than on my bike, Pitts gonna be the opposite. Of course mid ohio does change the key ohio.

BGTV8 · 01-21-2016, 04:58 PM

Diffuser needs a curve, not flat-plane. You are trying to replicate the top surface of an aircraft wing. You "need" outside fences aligned fore/aft with the longitudinal centreline of the vehicle - just inboard of the tyres, so that "wash" around the inside of the tyre does not create turbulence in the diffuser

Would probably help to install maybe 3 or 4 more strakes to channel air as well.

I'll post a photo of mine to make this verbiage clearer.

synolimit · 01-21-2016, 05:14 PM

Yes please do

Crux · 01-21-2016, 09:02 PM

I think he means something like these. These designs isolate turbulent air from the rear wheels, keeping the air under the car moving as fast as possible.

Elmo370z · 01-21-2016, 09:43 PM

https://youtu.be/pdAEHB5-CPU

You could make your own wind tunnel

djtodd · 01-22-2016, 07:10 AM

Yeah if you want a good car to study, under suzuki's s15 is one of the best.

Sent from my iPhone using Tapatalk

takjak2 · 01-22-2016, 03:02 PM

Flat diffusers work fine because we are interacting with the ground plane. Airfoil shapes are required when setting up relative pressure differences, but here we can work on a local pressure.

Now for angles:

From https://www.linkedin.com/pulse/how-d...eNoSplash=true

Enjoy

01-21-2016, 07:31 AM	#16 (permalink)
Venom13132 Base Member Join Date: Jul 2014 Location: indianapolis Posts: 232 Drives: 10Z Tour Sport Nav Rep Power: 11	cool project. I always like to follow these custom parts threads! Keep posting up pics! synolimit likes this.

01-21-2016, 09:04 AM	#17 (permalink)
03threefiftyz Track Member Join Date: Apr 2010 Location: MD Posts: 536 Drives: 03 350z 6mt Rep Power: 16	350/370's react quite well from an aero perspective to lots of rake.... djtodd and synolimit like this.

01-21-2016, 10:01 AM	#18 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Well heres 15.2* and 8 fins then! Centers 10", next 2 are like 5.375", and outer 4 a like 7 something. Just something i picked. All are 100% parallel with each other so we'll go full scale with alumilite and test with string i guess. ENT-Z and Wheels3309 like this. __________________ 13 370z- Last edited by synolimit; 01-21-2016 at 10:10 AM.

01-21-2016, 10:35 AM	#19 (permalink)
Haboob A True Z Fanatic Join Date: Aug 2012 Location: Surface of the sun. Posts: 13,159 Drives: '18 GTI Autobahn DSG Rep Power: 1387	You should just leave it all cardboard. DarkJak and Zbrah like this.

01-21-2016, 11:17 AM	#20 (permalink)
Haboob A True Z Fanatic Join Date: Aug 2012 Location: Surface of the sun. Posts: 13,159 Drives: '18 GTI Autobahn DSG Rep Power: 1387	I like the Carbotech stickers on the bumper too. Just in case I didn't see one, there's another one to remind me. VABAM likes this.

01-21-2016, 01:33 PM	#21 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,187 Drives: 2011 Nismo GM 6M Rep Power: 2684437	When you taking this thing to the track? You've been building it for 2yrs now, and haven't tested it on the track. I would have done one thing at a time to see if it made any improvements. FL 4Motion, sig11, Isamu and 5 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

01-21-2016, 02:00 PM	#22 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Because its not done. And im building this to be safe like all my past cars ive had on the local tracks. And these projects cost nothing vs having to buy seats, belts, almost 2k wing, cage etc. rome wasnt built in a day and ive got expensive other hobbies. Rusty ill make it to Pitt this summer. That 1:30's i saw must be killing you. You can tag along down into the teens with my draft. Ill slow it down some. __________________ 13 370z- Last edited by synolimit; 01-21-2016 at 02:12 PM.

01-21-2016, 02:33 PM	#23 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,187 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Just wait until you get of of those spec Miata's running you down. You couldn't run with Bruce Sheldon and his Ford Pinto @ 01:10:584. I can't wait to run the new section of track they built last year. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

01-21-2016, 02:57 PM	#24 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Same here. Last time i was there was on my bike at a 1:03's. Im assuming unlike mid ohio where im faster in a car than on my bike, Pitts gonna be the opposite. Of course mid ohio does change the key ohio. __________________ 13 370z-

01-21-2016, 04:58 PM	#25 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,514 Drives: 09 Nissan 370Z M6 Rep Power: 39973	Diffuser needs a curve, not flat-plane. You are trying to replicate the top surface of an aircraft wing. You "need" outside fences aligned fore/aft with the longitudinal centreline of the vehicle - just inboard of the tyres, so that "wash" around the inside of the tyre does not create turbulence in the diffuser Would probably help to install maybe 3 or 4 more strakes to channel air as well. I'll post a photo of mine to make this verbiage clearer. synolimit likes this.

01-21-2016, 05:14 PM	#26 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Yes please do __________________ 13 370z-

01-21-2016, 09:02 PM	#27 (permalink)
Crux Enthusiast Member Join Date: Mar 2012 Location: Maryland Posts: 253 Drives: 09 370z 7AT Rep Power: 13	I think he means something like these. These designs isolate turbulent air from the rear wheels, keeping the air under the car moving as fast as possible. synolimit likes this. __________________ My Build Last edited by Crux; 01-21-2016 at 09:05 PM.

01-21-2016, 09:43 PM	#28 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	https://youtu.be/pdAEHB5-CPU You could make your own wind tunnel synolimit likes this.

01-22-2016, 07:10 AM	#29 (permalink)
djtodd Track Member Join Date: Jun 2012 Location: Lexington, SC Posts: 932 Drives: 2012 Nismo TT Rep Power: 3398	Yeah if you want a good car to study, under suzuki's s15 is one of the best. Sent from my iPhone using Tapatalk TechnicZ, Crux and synolimit like this. __________________ DJTodd's Build Thread Fast Intentions • Volk • Stoptech • Carbotech • SPL • Southbend • OS Giken • RJM • Sparco • RobiSpec • AIM • Driver Mod

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